Endecagon (or hendecagon) and dodecagon.
Chat with our AI personalities
18
dodecagon * * * * * NO! That is 12 sides. 11 sides is a hendecagon.
A polygon with 12 sides is called a dodecagon.
A pentagon would have 5 sides. If it had 12 sides it would not be a pentagon. Maybe you mean a dodecahedron with 12 sides. I don't know what you would call that.
3 - triangle 4 - quadrilateral 5 - pentagon 6 - hexagon 7 - heptagon / septagon 8 - octagon 9 - nonagon 10 - decagon 11 - hendecagon 12 - dodecagon